/******************************************************************************
* Copyright (c) 2018-2018 TP-Link Systems Inc.
*
* Filename:
soap.c
* Version: 1.0
* Description:
soap 处理函数
* Author: liyijie<liyijie@tp-link.com.cn>
* Date: 2018-12-03
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include "onvif_passthrough.h"
#include "
soap_global.h"
#include "
soap_parse.h"
#include "
soap_pack.h"
#define
SOAP_TAG_NUM 256
typedef struct _
SOAP_TAG_HANDLE
{
char tag[LEN_TAG];
S32 (*handle)(
SOAP_CONTEXT *
soap);
}
SOAP_TAG_HANDLE;
LOCAL
SOAP_TAG_HANDLE g_
soap_tag_handle[
SOAP_TAG_NUM];
/******************************************************************************
* 函数名称: new_
soap()
* 函数描述: 申请
soap结构体
* 输 入: N/A
* 输 出: N/A
* 返 回 值:
soap结构体地址
******************************************************************************/
SOAP_CONTEXT *new_
soap()
{
SOAP_CONTEXT *
soap = NULL;
soap = (
SOAP_CONTEXT *)ONVIF_MALLOC(sizeof(
SOAP_CONTEXT));
if (
soap == NULL)
{
ONVIF_ERROR("malloc g_
soap_for_discv failed");
return NULL;
}
memset(
soap, 0, sizeof(
SOAP_CONTEXT));
if (OK != onvif_create_buf(&
soap->xml_buf, ONVIF_DISCV_BUF_LEN))
{
ONVIF_FREE(
soap);
return NULL;
}
return
soap;
}
/******************************************************************************
* 函数名称: free_
soap()
* 函数描述: 释放
soap结构体
* 输 入:
soap --
soap结构体地址
* 输 出: N/A
* 返 回 值: N/A
******************************************************************************/
void free_
soap(
SOAP_CONTEXT *
soap)
{
if (
soap == NULL)
{
return;
}
if (
soap->fault != NULL)
{
ONVIF_FREE(
soap->fault->
soap_env_value);
ONVIF_FREE(
soap->fault->
soap_env_subcode_1);
ONVIF_FREE(
soap->fault->
soap_env_subcode_2);
ONVIF_FREE(
soap->fault->
soap_env_reason);
ONVIF_FREE(
soap->fault);
}
onvif_free_buf(&
soap->xml_buf);
ONVIF_FREE(
soap);
return;
}
/******************************************************************************
* 函数名称:
soap_init()
* 函数描述: 初始化
soap结构体
* 输 入:
soap --
soap结构体地址
* 输 出: N/A
* 返 回 值: N/A
******************************************************************************/
void
soap_init(
SOAP_CONTEXT *
soap)
{
if (
soap == NULL)
{
ONVIF_WARN("
soap == NULL.");
return;
}
soap->error = OK;
soap->in_ip = 0;
soap->ifindex = -1;
soap->has_header = FALSE;
memset(&
soap->header, 0, sizeof(
SOAP_ENV_HEADER));
if (
soap->fault != NULL)
{
ONVIF_FREE(
soap->fault->
soap_env_value);
ONVIF_FREE(
soap->fault->
soap_env_subcode_1);
ONVIF_FREE(
soap->fault->
soap_env_subcode_2);
ONVIF_FREE(
soap->fault->
soap_env_reason);
ONVIF_FREE(
soap->fault);
soap->fault = NULL;
}
soap->tag[0] = '\0';
soap->request_begin = NULL;
soap->request_end = NULL;
soap->types[0] = '\0';
soap->scopes_item[0] = '\0';
soap->scopes_matchby[0] = '\0';
if (
soap->xml_buf.start == NULL ||
(
soap->xml_buf.end -
soap->xml_buf.start) > ONVIF_DISCV_BUF_LEN)
{
if (OK != onvif_create_buf(&
soap->xml_buf, ONVIF_DISCV_BUF_LEN))
{
soap->xml_buf.start = NULL;
soap->xml_buf.last = NULL;
soap->xml_buf.end = NULL;
}
}
soap->xml_buf.last =
soap->xml_buf.start;
return;
}
/******************************************************************************
* 函数名称:
soap_out_env_fault()
* 函数描述: 组装错误信息报文内容
* 输 入: xml_buf -- 存放输出xml字串的内存地址
* fault_data -- 错误信息
* 输 出: N/A
* 返 回 值: ERROR/OK
******************************************************************************/
LOCAL S32
soap_out_env_fault(ONVIF_BUF *xml_buf,
SOAP_ENV_FAULT *fault_data)
{
char attr[LEN_ANY] = {0};
if (xml_buf == NULL)
{
ONVIF_WARN("xml_buf == NULL.");
return ERROR;
}
/*
SOAP-ENV:Fault begin */
SOAP_IF_FAIL_RET(
soap_element_begin_out(xml_buf, G_
SOAP_ENV_FAULT_STR, NULL));
/*
SOAP-ENV:Code begin */
SOAP_IF_FAIL_RET(
soap_element_begin_out(xml_buf, "
SOAP-ENV:Code", NULL));
/*
SOAP-ENV:Value */
SOAP_IF_FAIL_RET(
soap_element(xml_buf, "
SOAP-ENV:Value", fault_data->
soap_env_value, NULL));
if (fault_data && fault_data->
soap_env_subcode_1)
{
/*
SOAP-ENV:Subcode begin */
SOAP_IF_FAIL_RET(
soap_element_begin_out(xml_buf, "
SOAP-ENV:Subcode", NULL));
/*
SOAP-ENV:Value */
SOAP_IF_FAIL_RET(
soap_element(xml_buf, "
SOAP-ENV:Value", fault_data->
soap_env_subcode_1, NULL));
if (fault_data->
soap_env_subcode_2)
{
/*
SOAP-ENV:Subcode begin */
SOAP_IF_FAIL_RET(
soap_element_begin_out(xml_buf, "
SOAP-ENV:Subcode", NULL));
/*
SOAP-ENV:Value */
SOAP_IF_FAIL_RET(
soap_element(xml_buf, "
SOAP-ENV:Value", fault_data->
soap_env_subcode_2, NULL));
/*
SOAP-ENV:Subcode end */
SOAP_IF_FAIL_RET(
soap_element_end_out(xml_buf, "
SOAP-ENV:Subcode"));
}
/*
SOAP-ENV:Subcode end */
SOAP_IF_FAIL_RET(
soap_element_end_out(xml_buf, "
SOAP-ENV:Subcode"));
}
/*
SOAP-ENV:Code end */
SOAP_IF_FAIL_RET(
soap_element_end_out(xml_buf, "
SOAP-ENV:Code"));
/*
SOAP-ENV:Reason begin */
SOAP_IF_FAIL_RET(
soap_element_begin_out(xml_buf, "
SOAP-ENV:Reason", NULL));
/*
SOAP-ENV:Text */
snprintf(attr, sizeof(attr), "xml:lang=\"en\"");
SOAP_IF_FAIL_RET(
soap_element(xml_buf, "
SOAP-ENV:Text", fault_data->
soap_env_reason, attr));
/*
SOAP-ENV:Reason end */
SOAP_IF_FAIL_RET(
soap_element_end_out(xml_buf, "
SOAP-ENV:Reason"));
/*
SOAP-ENV:Fault end */
SOAP_IF_FAIL_RET(
soap_element_end_out(xml_buf, G_
SOAP_ENV_FAULT_STR));
return OK;
}
/******************************************************************************
* 函数名称:
soap_fault()
* 函数描述: 填充错误信息结构体内容
* 输 入:
soap --
soap结构体地址
* code -- 错误码
* subcode1 -- 子错误码1
* subcode2 -- 子错误码2
* reason -- 错误原因
* 输 出: N/A
* 返 回 值: ERROR/OK
******************************************************************************/
S32
soap_fault(
SOAP_CONTEXT *
soap, char *code, char *subcode1, char *subcode2, char *reason)
{
ONVIF_TRACE("Onvif_fault\n");
if (
soap == NULL || code == NULL || subcode1 == NULL)
{
ONVIF_TRACE("
soap == NULL || code == NULL || subcode1 == NULL.");
return ERROR;
}
if (
soap->fault)
{
ONVIF_FREE(
soap->fault->
soap_env_value);
ONVIF_FREE(
soap->fault->
soap_env_subcode_1);
ONVIF_FREE(
soap->fault->
soap_env_subcode_2);
ONVIF_FREE(
soap->fault->
soap_env_reason);
}
else
{
soap->fault = ONVIF_MALLOC(sizeof(
SOAP_ENV_FAULT));
}
if (NULL ==
soap->fault)
{
ONVIF_WARN("ONVIF_MALLOC fault failed.");
return ERROR;
}
memset(
soap->fault, 0, sizeof(
SOAP_ENV_FAULT));
soap->fault->
soap_env_value = ONVIF_STRDUP(code);
if (NULL ==
soap->fault->
soap_env_value)
{
ONVIF_WARN("ONVIF_STRDUP
soap_env_value failed.");
return ERROR;
}
soap->fault->
soap_env_subcode_1 = ONVIF_STRDUP(subcode1);
if (NULL ==
soap->fault->
soap_env_subcode_1)
{
ONVIF_WARN("ONVIF_STRDUP
soap_env_subcode_1 failed.");
return ERROR;
}
if (subcode2)
{
soap->fault->
soap_env_subcode_2 = ONVIF_STRDUP(subcode2);
if (NULL ==
soap->fault->
soap_env_subcode_2)
{
ONVIF_WARN("ONVIF_STRDUP
soap_env_subcode_2 failed.");
return ERROR;
}
}
if (reason)
{
soap->fault->
soap_env_reason = ONVIF_STRDUP(reason);
if (NULL ==
soap->fault->
soap_env_reason)
{
ONVIF_WARN("ONVIF_STRDUP
soap_env_reason failed.");
return ERROR;
}
}
return OK;
}
/******************************************************************************
* 函数名称:
soap_generate_fault()
* 函数描述: 组装错误报文xml内容
* 输 入:
soap --
soap结构体地址
* 输 出: N/A
* 返 回 值: ERROR/OK
******************************************************************************/
LOCAL S32
soap_generate_fault(
SOAP_CONTEXT *
soap)
{
if (
soap == NULL)
{
ONVIF_WARN("
soap == NULL.");
return ERROR;
}
//
soap_set_fault(
soap);
if (
soap->fault == NULL)
{
return ERROR;
}
if (
soap->error < 200 &&
soap->error !=
SOAP_FAULT)
{
soap->has_header = FALSE;
}
return
soap_generate_xml((p_out_fun)(
soap_out_env_fault),
soap,
soap->fault);
}
/******************************************************************************
* 函数名称:
soap_serve_request()
* 函数描述:
soap请求处理函数入口
* 输 入:
soap --
soap结构体地址
* 输 出: N/A
* 返 回 值: ERROR/OK
******************************************************************************/
S32
soap_serve_request(
SOAP_CONTEXT *
soap)
{
U32 index = 0;
PASSTHROUGH_RET ret = 0;
if (
soap == NULL ||
soap->tag[0] == '\0')
{
return ERROR;
}
ret = onvif_serve_passthrough(
soap);
if (PASSTHROUGH_ERROR == ret)
{
return ERROR;
}
else if (PASSTHROUGH_
SOAP_FAULT == ret)
{
SOAP_IF_FAIL_RET(
soap_generate_fault(
soap));
}
else if (PASSTHROUGH_NOT_MATCH == ret)
{
for (index = 0; index <
SOAP_TAG_NUM; index++)
{
if (NULL == g_
soap_tag_handle[index].handle)
{
SOAP_IF_FAIL_RET(
soap_fault(
soap, "
SOAP-ENV:Receiver", "ter:ActionNotSupported", NULL, NULL));
soap->error =
SOAP_FAULT;
SOAP_IF_FAIL_RET(
soap_generate_fault(
soap));
break;
}
if (
soap_match_tag(
soap->tag, g_
soap_tag_handle[index].tag))
{
if (g_
soap_tag_handle[index].handle(
soap))
{
if (
soap->fault == NULL)
{
soap_fault(
soap, "
SOAP-ENV:Sender", "ter:InvalidArgVal", NULL, "error");
soap->error =
SOAP_FAULT;
}
SOAP_IF_FAIL_RET(
soap_generate_fault(
soap));
}
break;
}
}
if (index >=
SOAP_TAG_NUM)
{
SOAP_IF_FAIL_RET(
soap_fault(
soap, "
SOAP-ENV:Receiver", "ter:ActionNotSupported", NULL, NULL));
soap->error =
SOAP_FAULT;
SOAP_IF_FAIL_RET(
soap_generate_fault(
soap));
}
}
/* UDP直接回复，HTTP在上一层回复 */
if (
soap->use_udp == TRUE &&
soap->xml_buf.start != NULL &&
soap->xml_buf.start !=
soap->xml_buf.last)
{
return onvif_send_udp_packet(
soap->sock,
soap->in_ip,
soap->sin_port,
soap->xml_buf.start, (
soap->xml_buf.last -
soap->xml_buf.start));
}
return OK;
}
LOCAL S32
soap_env_fault_handle(
SOAP_CONTEXT *
soap)
{
if (
soap == NULL)
{
ONVIF_WARN("
soap == NULL.");
return ERROR;
}
ONVIF_TRACE("
SOAP-ENV:Fault handle.");
/* do nothing and no response */
return OK;
}
/******************************************************************************
* 函数名称:
soap_tag_handle_add()
* 函数描述: 注册
soap请求处理函数
* 输 入: tag -- 请求tag
* handle -- 处理函数
* 输 出: N/A
* 返 回 值: ERROR/OK
******************************************************************************/
void
soap_tag_handle_add(char *tag, void *handle)
{
U32 index = 0;
if ((NULL == tag) || (strlen(tag) >= 64) || (NULL == handle))
{
ONVIF_ERROR("
soap handle add error, invalid arg.");
return;
}
while ((index <
SOAP_TAG_NUM) &&
(NULL != g_
soap_tag_handle[index].handle))
{
index++;
}
if (index >=
SOAP_TAG_NUM)
{
ONVIF_ERROR("
soap handle add error, max support %d tags.",
SOAP_TAG_NUM);
return;
}
snprintf(g_
soap_tag_handle[index].tag, sizeof(g_
soap_tag_handle[index].tag), "%s", tag);
g_
soap_tag_handle[index].handle = handle;
return;
}
/******************************************************************************
* 函数名称:
soap_tag_handle_init()
* 函数描述: 初始化
soap请求处理函数
* 输 入: N/A
* 输 出: N/A
* 返 回 值: ERROR/OK
******************************************************************************/
void
soap_tag_handle_init()
{
U32 index = 0;
for (index = 0; index <
SOAP_TAG_NUM; index++)
{
memset(g_
soap_tag_handle[index].tag, 0, sizeof(g_
soap_tag_handle[index].tag));
g_
soap_tag_handle[index].handle = NULL;
}
soap_tag_handle_add("
SOAP-ENV:Fault",
soap_env_fault_handle);
return;
}
——+能不能详细地一行一行一个一个变量一个一个函数地给我解释下代码
本文介绍了SOAP（Simple Object Access Protocol），一种基于XML的轻量级通信协议，用于分布式环境中应用程序间的通信。SOAP具有平台独立性和语言独立性，允许消息绕过防火墙，并且可以扩展。
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